He conducted a thought experiment to solve a problem in physics.

According to the law on specified alien species, the import of certain organisms is prohibited.

I saw a blue jay in the park.

The Steller's jay was flying with its beautiful blue feathers spread out.

Neurotransmitters are responsible for transmitting information between nerve cells.

Chemotransmitters play an important role in the transmission of information between nerve cells.

Sufficient caution is necessary when handling radioactive materials.

The Germanic languages, such as English and German, form the basis of many modern languages.

It is reported that North Korea has conducted another underground nuclear test.

He is an expert in experimental psychology.